projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
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| bfff8b1b | 1 | /* Copyright (C) 1991-2017 Free Software Foundation, Inc. |
| 54d79e99 UD |
2 | This file is part of the GNU C Library. |
| 3 | ||
| 4 | The GNU C Library is free software; you can redistribute it and/or | |
| 41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either | |
| 7 | version 2.1 of the License, or (at your option) any later version. | |
| 54d79e99 UD |
8 | |
| 9 | The GNU C Library is distributed in the hope that it will be useful, | |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 41bdb6e2 | 12 | Lesser General Public License for more details. |
| 54d79e99 | 13 | |
| 41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
| 59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
| 16 | <http://www.gnu.org/licenses/>. */ | |
| 28f540f4 RM |
17 | |
| 18 | #ifndef _SYS_FILE_H | |
| 28f540f4 | 19 | #define _SYS_FILE_H 1 |
| 5107cf1d | 20 | |
| 28f540f4 RM |
21 | #include <features.h> |
| 22 | ||
| 23 | #ifndef _FCNTL_H | |
| dfd2257a | 24 | # include <fcntl.h> |
| 28f540f4 RM |
25 | #endif |
| 26 | ||
| 27 | __BEGIN_DECLS | |
| 28 | ||
| 29 | ||
| 30 | /* Alternate names for values for the WHENCE argument to `lseek'. | |
| 31 | These are the same as SEEK_SET, SEEK_CUR, and SEEK_END, respectively. */ | |
| 1474b80f | 32 | #ifndef L_SET |
| dfd2257a UD |
33 | # define L_SET 0 /* Seek from beginning of file. */ |
| 34 | # define L_INCR 1 /* Seek from current position. */ | |
| 35 | # define L_XTND 2 /* Seek from end of file. */ | |
| 1474b80f | 36 | #endif |
| 28f540f4 RM |
37 | |
| 38 | ||
| 39 | /* Operations for the `flock' call. */ | |
| dfd2257a UD |
40 | #define LOCK_SH 1 /* Shared lock. */ |
| 41 | #define LOCK_EX 2 /* Exclusive lock. */ | |
| 42 | #define LOCK_UN 8 /* Unlock. */ | |
| 28f540f4 RM |
43 | |
| 44 | /* Can be OR'd in to one of the above. */ | |
| dfd2257a | 45 | #define LOCK_NB 4 /* Don't block when locking. */ |
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46 | |
| 47 | ||
| 48 | /* Apply or remove an advisory lock, according to OPERATION, | |
| 49 | on the file FD refers to. */ | |
| c1422e5b | 50 | extern int flock (int __fd, int __operation) __THROW; |
| 28f540f4 RM |
51 | |
| 52 | ||
| 53 | __END_DECLS | |
| 54 | ||
| 55 | #endif /* sys/file.h */ |